View Full Version : 12/12 All the way??
yokotiyoshi
10-10-2005, 12:44 PM
What do you think the results would be if I grow plants (Sativa Dominant example. Haze/Durban Poison) under 12/12 photoperiod? I mean from seedling to finish. I think it would grow normally under this photoperiod because in the tropics that is the way the sun works. Has anyone tried this?
:confused:
Marc Benson
10-10-2005, 12:59 PM
Might work but it would take a lot longer than 24/0 veg and then 12/12 flower.
BobBong
10-10-2005, 01:08 PM
it will work. of course it will work. the only thing is like Marc said, it will take longer. The plant will automatically flower.. and the size... will not be garuntee'd in anyway.
The whole point of vegging and then forcing a flowering stage is that you can control the size of plant that you want, especially indoors.
Torog
10-10-2005, 01:09 PM
What do you think the results would be if I grow plants (Sativa Dominant example. Haze/Durban Poison) under 12/12 photoperiod? I mean from seedling to finish. I think it would grow normally under this photoperiod because in the tropics that is the way the sun works. Has anyone tried this?
:confused:
Howdy yokotiyoshi,
Are you saying,that at any given time,that there's never more than 12 hours of daylight in the tropics ? There should be more daylight hours in the tropics-not less..during the summer,here in Texas,the sun rises at 6 am or so and doesn't set until dang near 9:30 pm..that's 15 1/2 hours of daylight. Please correct me if I'm wrong,also..there's an article under advanced techniques forum,that you may be interesed in,that deals with photo-periods in regards to growing marijuana. I believe that the article points out that it may be more beneficial to increase the standard photo-period for flowering,in the case of tropical-zone sativa strains.
Have a good one ....
yokotiyoshi
10-11-2005, 09:24 AM
Marc and Bob; I thought it would take less time to finish, in the tropics crops are planted and harvested in 3months + or - 2weeks. Maybe my source is wrong.
Torog: Yes everyday in the tropics (the caribbean) to be specific, the sun shines for only 12hours, maybe a few minutes off during the months of may - sept, but it's always 12/12 there.
SOLUTION:
There's one way to find out for sure right? Well I'm goin to try it with the Haze Strain i bought from Nirvana. We'll see what happens, huh. :D
clembob101
10-11-2005, 09:51 AM
dude if you start at 12/ 12 you are gonna end up with about a 6" plant with a spliff on it thats if it will grow properly at all .
yokotiyoshi
10-11-2005, 10:58 AM
clembob but they are sativa dominant?
anyways, check it out
Strain: Haze (Nirvana)
Photoperiod: 12/12
Lights: 1000W MH
These are about 1 day old.
Torog
10-11-2005, 11:28 AM
clembob but they are sativa dominant?
anyways, check it out
Strain: Haze (Nirvana)
Photoperiod: 12/12
Lights: 1000W MH
These are about 1 day old.
Howdy yokotiyoshi,
Well daggum...learn something new everyday..lol.
Say...have ya got a fan blowing air around ? It looks like yer wee darlins,are stretching a bit..are ya starting out with a 1kwatt mh ? If it ain't ventilated,I can understand that you have to put the light up pretty high from yer plants. You may need to find the lowest point you can have the light,so they don't stretch,without gittin too much heat on them. That's what I had to do..and the seedlings were as short and stout,as any I've seen,a 1kwatt mh,is great for doing such,in my experience..it seemed as though one could grow short,stout seedlings all day long,if one were in the biz of growing such and for clones too,in my opinion.
I wish you all the best !:)
Have a good one !
budman2000
10-11-2005, 07:31 PM
If you are getting specific seeds get them feminized, that way you can leave the lights on 24/0 till you decide to flower without chancing a hermi. :)
latewood
10-11-2005, 08:02 PM
It will work..go for it, post and then everyone won't have to guess...
I am doing my next grow 16/8 decreasing equally every 2-3 weeks to 10/14...
Marc Benson
10-11-2005, 09:20 PM
My question would be this. If we have the correct spectrum for the specific phase of growth drummed into our heads, and we agree that light towards the red spectrum (hps) is actually required...for flowering...and that light towards the blue spectrum (mh) is actually required...for vegging...why would a person think that a red spectrum light would grow a plant efficiently in it's vegetative phase? I would think that a plant grown with hps from start to finish would be about 14 feet tall with nodes about 12" apart.
But as latewood suggested, try it and show us what it looks like.
Hello yokotiyoshi :) I'm kinda following what you're doing, when I first read you're thread I thought "no way" but know I'm not so sure what will happen :confused:
Please keep posting the progress, I'm quite hooked on seeing how it goes ;)
Good luck................love mand xxx :)
yokotiyoshi
10-12-2005, 12:52 PM
Thanx for the support!
Torog, I am concerned about the stretching but i can't lower the 1000watt any lower it will get too hot. Currently it's about 1m away from the plants. I would much rather have stretched plants than dead plants (know what imean :o ) I'll still try to tweek it a little more though, or i might have to put up some supports/stakes later on.
I do have a fan blowing them during the light hours, i usually leave it off during the dark periods.
budman: feminized seeds are a good idea, but i'm not goin to put any more money into this. I'm on a budget.
marc: i understand about the hps vs mh, but i've seen posts with people using hps for vegging too. I've done it in my previous grows, but they started to stretch a little....
everyone else, i'll try to keep you posted, but i'm a working man :)
yokotiyoshi
10-12-2005, 12:52 PM
BTW, this is day 2
turtle420
10-12-2005, 01:03 PM
Yeah! Keep the updates man... very interesting!
budman2000
10-12-2005, 04:58 PM
:) Get yor lights closer!!! Your plants are stretching dangerously too far.Put a fan inbetween the top of the plant and the light and that should take care of the heat. And I couldnt help but notice the Mirical Grow bag.If you are using that,when you decide to fert use a very small amount cause most of the MG soil has slow release ferts in it. Ive lost my first 2 grows over that shit before I even knew what was going on. Good luck and happy growing!!! :)
BobBong
10-12-2005, 05:30 PM
Marc and Bob; I thought it would take less time to finish, in the tropics crops are planted and harvested in 3months + or - 2weeks. Maybe my source is wrong.
it will take longer because your vegetative cycle is being drawn out. MJ needs a minimum of 16-18 hours of light to make vegetative growth ideal. On 12/12 from seed your plant will take much longer to mature, as the light cycle you're using.. is mainly for flowering.
The purpose of 12/12 is to simulate the end of the season, the days getting shorter. This tells the plant it's time to seed.. or make bud. buds would turn to seed if they were pollenated.
So on 12/12 your plant will grow slowly, automatically flower.. and only grow so big.
yokotiyoshi
10-13-2005, 10:18 AM
budman: K+ to you man, i had no clue of that.
I did move the lights closer, I/we should see a difference by the next 2days or so.
bob: thnx for the inputs. we'll se what happens
okay.....day 3
BTW. do they look like they're growing alright? I think they are a little slow on growth.
Torog
10-14-2005, 12:17 PM
Thanx for the support!
Torog, I am concerned about the stretching but i can't lower the 1000watt any lower it will get too hot. Currently it's about 1m away from the plants. I would much rather have stretched plants than dead plants (know what imean :o ) I'll still try to tweek it a little more though, or i might have to put up some supports/stakes later on.
I do have a fan blowing them during the light hours, i usually leave it off during the dark periods.
budman: feminized seeds are a good idea, but i'm not goin to put any more money into this. I'm on a budget.
marc: i understand about the hps vs mh, but i've seen posts with people using hps for vegging too. I've done it in my previous grows, but they started to stretch a little....
everyone else, i'll try to keep you posted, but i'm a working man :)
Howdy yokotiyoshi,
I have a friend,that's been growing since the 70's,and he would call what you got-salad greens..because of the stretch you have going on,he plucks em right away. I think that what you need to do,is to git some floro's to start yer plants with,that way,you can put the light almost at the tops and with a fan going,you'll be amazed at the difference. In fact,your seedlings will be on their third node,and still be shorter than what you have..when they git established well,then you can kick in the mh light and hopefully,you will have some better ventilation for your hid light by then. Gittin yer seedlings short and stout,with short internodal lengths,is critical for your plant's entire life..they will be able to bear the weight of heavy flowers later on.
Good Luck man !
Have a good one !
yokotiyoshi
10-15-2005, 11:54 PM
well i'm thinking of doing that too, but i'll give them a few days again, mybe something will happen. still on 12/12 day 6. :) I'm gonna shop around for some good floros, ones that ican depend on and lasts. You know any e-shops? well does anybody?
Much Thanx
Hello yokotiyoshi :) I have to make this a very quick reply as I just called on before going out............................I think that you need to get some sticks in there to help support them ;)
They really have streched to much to support themselves by the looks of the pics.
love mand xxx :)
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